Grain-separator



S. & 0. PETTIBONE.

Grain Winnower.

Patented Nov. 20, 1860.

N. PETERS mmmba nw. wmiwm D. C.

UNITED STATES PATENT OFFICE.

S. PETTIBONE AND O. PETTIBONE, OF CORUNNA, MICHIGAN.

GRAIN SEPARATOR.

Specification of Letters Patent N 0. 30,690, dated November 20, 1860.

To all whom it may concern:

Be it known that we, S. PETTIBONE and O. PETTIBONE, of Corunna, in thecounty of Shiawassee and State of Michigan, have invented a new andImproved Grain-Sep arator; and we do hereby declare that the followingis a full, clear, and exact descrip' tion of the same, reference beinghad to the annexed drawings, making a part of this specification, inwhich Figure 1, is a transverse vertical section of the invention takenin the line w, 00, Fig. 2. Fig. 2, a longitudinal vertical section ofthe same taken in the line y, y, Fig. 1. Fig. 3, a horizontal section ofthe same taken in the line 2, 2, Fig. 2.

Similar letters of reference indicate corresponding parts in the severalfigures.

To enable those skilled in the art to fully understand and construct ourinvention we will proceed to describe it.

A, represents a rectangular framing which may be constructed in anyproper wayand B, is a case or box which is fitted in the framing A, asfollows. To a cross piece a, at the upper part of the framing A, thereis attached by a screw bolt 6, a plate 0, the latter being at the underside of the cross piece a, and having a horizontal slot (Z, in itthrough which the bolt 6, passes. To this plate 0, a pendent pin 6, isattached and this pin is fitted in a bearing f, attached to the upperpart of the case or box B. To the lower part of the case or box B, andat a point in line with the plate 0, there is attached a pin g, the twopins 6, g, being in line with each other when the case or box isadjusted in a proper working position. The pin 9, is fitted in a step orbearing 71-, which is attached to a cross-piece 2', at the lower part ofthe framing by a bolt said bolt passing through an oblong horizontalslot 70, in the step or bearing to admit of a certain degree of lateraladjustment of the step. This will be fully understood by referring toFig. 1.

The case or box B, has its front part formed similar to an ordinary shoeand its back part is rounded or is of semicircular form corresponding toan ordinary fan box, see more particularly Fig. 2. The fan box and shoetherefore-are in one and the same case or box the front part of thelatter beingprovided with the usual screens Z, and

the back part with a rotary fanC, which ma be constructed in theordinary way.

n the upper part of the framing A, there is placed a hopper D, fromwhich the grain passes into the upper part of the case or box and fallson the upper screen and in its passage to and over the screens is actedupon by the blast generated by the rotation of the fan C.

The case or box B, has a shake motion given it by a connecting rod m,attached at one end to a crank pulley n, at one end of the fan shaft 0,the opposite end of said rod being attached to a bell crank 29, which isconnected by a link g, to the outer end of the case or box.

In consequence of the case or box B, being hung by the pins 0, g, in theframing the shake motion of the case or box will be perfectly horizontaland the grain will pass over the screens in an even sheet and with fargreater uniformity than where the shoe vibrates in the are of a circleon pendent rods or wires. By having the plate 0, se cured to the crosspiece a, by the bolt I), passing through a longitudinal slot 03, theplate 0, is rendered adjustable in a longitudinal direction and thefront part of the case or box and consequently the screens may be moreor less inclined, as circumstances may require, and by having the stepor bearing h, adjustable in a direction transversely with the case orbox the horizontality of the latter, and consequently its screens intheir transverse section may always be insured and the grain allowed topass over the screens in a sheet extending their whole width therebyexposing the grain most favorably to the action of the blast from fan C.

By having the fan box and shoe connected and formed in one case or box,the full effective force of the blast is obtained, as there is no chancefor it to escape before passing over the screens, as in the ordinarymachines, and this arrangement also economizes the construction of themachine, considerable less material being required than usual, and lesslabor.

We would remark that one of the pins might be made adjustable in bothdirections for the purpose of leveling and adjusting the screens.

We do not claim giving the shoe of a separator a perfectly horizontalvibrating movement irrespective of the mode of hange, 9, arrangedsubstantially as and for the ing,ftfhe same1 as 118E611}; sltiown anddescribed, purpose set forth. to e ect sue resu u Ve do claim as new anddesire to secure by Letters Patent- Hanging the shoe of a grainseparator Witnesses: when connected With the fan case as herein CURTISJ. GALE, shown and described; by means of the pins D. F. ALSDORF.

